The opportunity:

Flexport is a platform for global trade in an industry that comprises 12% of the global GDP.  We are the first licensed freight forwarder and customs brokerage built around a modern tech stack.  We help the world's fastest-growing brands manage their international supply chains, providing a fully-managed service for moving products between any two places on the planet.

Exceptional software development is integral in allowing us to fulfill our mission of fixing the user experience in global trade. At Flexport you’ll develop products that are at the forefront of reshaping the entire logistics & supply chain industries. You’ll work alongside self-starters interested in solving real-world problems and streamlining the inefficiencies in the complex global trade industry. You’ll have the opportunity to reshape an industry by creating the new operating system for global trade.

Our engineers are top-notch software developers who love listening to the users, working as a team, and proactively taking the lead whenever necessary. The role involves learning the business of freight forwarding, modeling the work that people do to move freight, designing solutions to make it more efficient, and thinking innovatively to automate much of it. In this role, you will have an opportunity to own the design and development of key parts of our forwarding systems. You will have influence on subsystem design and help contribute to a team culture around practices that are critical to a quality product. 

About the team:

We have multiple teams in Shanghai and Shenzhen working on a suite of core products and services that enable Flexport operation to scale, including Forwarding Application, Client Application, Shipper Application, WMS, Consol Planning Tool, Document Platform (AI empowered), Email Platform, Compliance Platform, Work Assignment Engine, Exception Management, AI Copilot, Insight Builder (AI Data Analytics) and so on. 

In addition, we have a NAWS (Native AWS) team that develops infrastructure solutions for our products and services using the latest Infrastructure as Code (IaC) technology: CDKTF (Cloud Development Kit for Terraform). Our scope includes, but is not limited to, CI/CD, observability, DevX, data subsetting (TS3), IaC, template engines, and various open-source projects. Additionally, the team provides technical guidance to engineers across the organization.

We are looking for engineers who love learning, are passionate about collaborating, and desire to build solutions with a global impact.

You will:

• Build highly available, secure, distributed systems in a microservice architecture.
• Build cutting edge infrastructure solutions to help improve development experience across the company. And, work closely with other engineering teams to help them solve infrastructure related problems.
• Design, develop, test and maintain systems that represent the real-world intricacies of logistics entities, such as shipper, client, cargo, document, carrier, container, email etc.
• Collaborate with some of the best engineers in the industry to work on complex business and technical problems.
• Work closely with business partners and product managers to distill complex business problems into elegant technical solutions.
• Build and launch products rapidly and incrementally. We ship to production dozens of times per day.
• Ensure our products maintain a high-quality bar. We believe in anticipating issues by obsessing over metrics and applying key learnings from post-mortems to all our services.
• Geek out about shipping and logistics. (We do this often.)

You should have:

Basic Qualifications

• 3+ years of experience writing software, and a strong engineering background.
• 2+ years of design and architecture knowledge as well as familiarity with object-oriented analysis and design patterns (OOA/OOD)
• Knowledge of at least one programming language such as TypeScript, Ruby, C, C++, Java, or Kotlin
• Bachelor's degree in Computer Science or related technical field, or equivalent experience

Preferred Qualifications

• A love of simple, well-tested code that is easy to extend and hard to break.
• A bias for action. When you see a problem, you solve it.
• The ability to convey technical ideas in common terms to business partners, product managers, and engineers alike.
• Experience building large scale, high-performance systems in a complex, multi-tiered, distributed environment
• Understanding of performance tradeoffs, load balancing and operational issues
• Knowledge of professional software engineering practices & best practices for full software development life cycle, including coding standards, code reviews, source control management, continuous deployments, testing, and operations
• Experience with Infrastructure as Code (IaC) tools such as CDKTF, Terraform, AWS CloudFormation, or similar.
• Having basic concepts in AWS services, including IAM, EC2, ECS, S3, Lambda, Step Functions, EventBridge, and VPC, or equivalent services from other cloud providers.
• Familiarity with CI/CD pipelines, infrastructure automation, and monitoring/observability tools.
• Ability to troubleshoot and optimize distributed systems and cloud deployments.
• Non-optional: an aptitude for learning quickly.

Engineering Culture and Values:

• Check out our Key Values profile.

#LI-onsite

BBPOS is looking for a passionate, self motivated and hard working Quality engineer to be part of a diverse, dynamic and high energy team. The work is in a highly collaborative and multi- functional environment, handling several projects at a time. The successful candidate will be an experienced Quality engineer who ideally has Mechanical, Electrical and Hardware Quality Assurance expertise and will be experienced in Quality management systems, Data analysis techniques and quality assurance methodologies. 

What you will do

This position is based in Shenzhen, requiring frequent business travel to our manufacturing partners in Vietnam and other Contract Manufacturers (CMs) across China. You will be responsible for OEM product quality from new product introduction through sustaining. Being comfortable in a rapidly evolving and dynamic environment coupled with excellent communication skills are essential to the role. You will foster and build an excellent communication and working relationship with our global Stripe partners.

• Define and implement BBPOS quality management in OEM factories.
• Establish a system of quality metrics to continually drive and supervise measurable quality at OEM.
• Manage IQC, IPQC and OQC for product quality control.
• Define and implement Quality assurance processes for our in house developed Hardware solutions (both for our Shop floor system Hardware and for BBPOS Product Test & Diagnostic bundles).
• Conduct quality system audit and quality process audit for CM maturity improvement.
• Understand product and process CTQ and implement control plans to monitor these CTQ’s and prevent quality excursions or quality incidents.
• Lead quality readiness review and monitor quality result during new product introduction builds.
• Conduct failure analysis and implement corrective actions for quality issues resolution.
• Drive the use of statistical analysis for key Quality data across the team.
• Collaborate with multi-functional peers on key business initiatives. Actively participate in these discussions in a transparent manner and bring data and value to these initiatives based on data and knowledge from your team.

Who you are

We’re looking for someone who meets the minimum requirements to be considered for the role. If you meet these requirements, you are encouraged to apply. The preferred qualifications are a bonus, not a requirements

Minimum requirements: 

• Education background from BE, BS or MS in Engineering 
• At least 8 years of experience in implementing hardware Quality assurance methodologies to prevent quality issues from sneaking out of the factory.
• Knowledge of FATP (Final Assembly, Testing, Packing) for a POS reader or similar products such as phone or tablet electronic products.
• Basic Lean principle and methodologies such as CTQ, PDCA, 8D Problem Solving, Kaizen, Mistake proofing, DMAIC, FMEA, etc…
• Root cause analysis skills and with robust corrective action understanding for problem solving.
• Familiar with critical to quality control, and implement statistical quality process control and risk mitigation plan to ensure quality.
• Able to develop and implement OEM quality process audit checklist for continuous quality improvement.
• Proven track record to understand all aspects of Quality and to be able to lead and influence Operations and Suppliers.
• Familiarity with Hardware failure analysis techniques.
• Fluent in Chinese and English
• Comfortable with frequent business travel

Preferred qualifications: 

• Basic SMT (Surface Mount Technology), PCBA(Print Circuit Board Assembly) background
• Quality qualification would be an advantage

We are currently recruiting for a Smart Logistics Platform that provides one-stop logistics solutions specifically for online stores and SMEs. By integrating e-commerce support—including warehousing, packaging, and shipping—they have pioneered a Logistics SaaS (Software as a Service) model designed to make shipping as simple and seamless as booking a hotel.

Key Responsibilities:

• Architectural Leadership: Lead the construction and optimization of front-end and back-end services for cross-border e-commerce logistics SaaS products on cloud platforms, ensuring high scalability and availability.

• Core Development: Deeply involve in requirement analysis and architectural design; write core and complex module code while guiding team members through the development lifecycle.

• API Management: Responsible for the design and optimization of RESTful APIs to ensure efficient interaction between third-party logistics services and internal systems.

• Quality Assurance: Lead the development of testing architectures and quality assurance systems, including unit testing, API testing, automated testing, and static code analysis.

• Performance Optimization: Continuously optimize product performance to enhance system response speed, stability, and concurrent processing capabilities.

• Technical Standards: Drive the implementation of technical specifications, ensure code quality meets enterprise standards, and advocate for best practices within the team.

• Mentorship: Mentor and develop junior and mid-level engineers to elevate the overall technical capability and development efficiency of the team.

• Global Collaboration: Work closely with product teams in Hong Kong and globally, participating in technical reviews and cross-regional collaboration.

Job Requirements:

• Education: Bachelor’s degree or above in Computer Science or a related field.

• Experience: 7+ years of software development experience; expert proficiency in TypeScript, Node.js, and React. Proven track record in system architecture and high-performance services.

• Cloud & Infrastructure: Deep understanding of AWS cloud services and distributed architectures; familiar with Docker, containerization, and microservices.

• Database Management: Proficient in PostgreSQL design and optimization with experience in large-scale data processing.

• Problem Solving: Excellent system design and analytical skills, with the ability to lead technical roadmaps and resolve complex technical challenges.

• Soft Skills: Strong self-learning abilities, teamwork, and communication skills; able to collaborate effectively within a multinational team.

• Industry Context: Experience in Logistics, E-commerce, or SaaS industries is highly preferred. Possess business acumen to bridge the gap between technology and business needs.

• Language: Fluency in English is preferred for seamless communication within an international team environment.

My client is a leading Web3 and Decentralized Finance (DeFi) company and looking for a Senior Smart Contract Engineer (Solidity/Rust/Move) roles.

Core Responsibilities

• Protocol Architecture & Deployment: Architect and implement core on-chain protocols for a Decentralized Exchange (DEX), including capital vaults, clearinghouses, and settlement engines.

• On-Chain Transaction Logic: Develop the underlying logic for clearing and settlement processes, ensuring high-fidelity integration with off-chain high-performance matching engines.

• Oracle System Integration: Design and maintain robust Oracle contract frameworks to support real-time price feeds, data validation, and asset valuation.

• Security & Audit Management: Lead smart contract security hardening initiatives, collaborate with external auditors to rectify vulnerabilities, and oversee mainnet deployments.

• End-to-End Synergy: Partner with backend and QA teams to bridge the gap between off-chain trade commands and on-chain fund movements for seamless execution.

Candidate Requirements

• Academic Background: Degree in Computer Science, Software Engineering, Cryptography, or a related technical field.

• Solidity Mastery: 3+ years of professional Solidity development with deep expertise in EVM mechanics, Gas optimization techniques, and ERC standards.

• DeFi Domain Expertise: 2+ years of specialized experience in DEX clearing and settlement workflows, including sophisticated Oracle integration.

• Multi-Chain Proficiency: Proficient in Rust or Move programming, with the ability to lead contract module development across diverse blockchain ecosystems.

• Ecosystem Knowledge: Strong understanding of the architectural paradigms of high-performance chains such as Solana or Sui.

Preferred Qualifications

• Experience developing advanced vault standards (e.g., ERC-4626, ERC-7540, or ERC-7575) and complex accounting logic.

• Familiarity with advanced security methodologies, including Fuzzing or Formal Verification.

• Proven track record of successful smart contract audits or hands-on experience in incident response and protocol hardening.

We are seeking a highly technical Senior QA Engineer to spearhead the quality assurance strategy for our client - Decentralized Exchange (DEX). This role focuses on the intersection of traditional exchange mechanics and blockchain technology, requiring a candidate who can perform deep white-box testing on smart contracts while ensuring the reliability of the entire trading lifecycle.

Key Responsibilities

• Full-Stack Testing: Lead end-to-end testing for DEX/CEX platforms, encompassing functional integration, User Acceptance Testing (UAT), performance/stress testing, and security assessments.

• Smart Contract White-Box Testing: Conduct rigorous unit and integration testing for core on-chain components, including Vaults, Clearinghouses, Settlement engines, and Oracles.

• Framework Architecture: Build and maintain scalable automated testing frameworks using industry-standard tools like Hardhat and Foundry.

• Release Management: Oversee production environment deployment verification, regression testing, and final launch acceptance to ensure zero-defect deployments.

• Collaborative Design: Actively participate in requirements review and test design alongside Developers and Product Managers to bake quality into the development lifecycle.

Required Qualifications & Skills

• Experience: 8+ years of professional QA experience with a deep understanding of cross-platform testing (PC, H5, and Mobile).

• Domain Expertise: 3+ years of specific experience in Exchange (DEX/CEX) testing, with a thorough grasp of matching engines, clearing/settlement, and asset flow logic.

• Blockchain Proficiency: Mastery of smart contract testing across at least two major ecosystems: EVM (Solidity), Sui (Move), or Solana (Rust/Anchor).

• Technical Toolkit: Proficient in Hardhat, Foundry, or Truffle for comprehensive white-box testing of contract source code.

• Web3 Integration: Skilled in testing Chainlink Oracle integrations, WalletConnect, and Web3 Providers.

• Automation Mastery: Proven ability to implement end-to-end automation spanning UI, API, and on-chain interactions.

• Risk Management: Familiarity with exchange risk control systems and experience validating complex risk parameters.

Preferred Attributes (Bonus)

• Protocol Knowledge: Experience testing specific standards and architectures such as ERC-4626 (Yield-bearing vaults), ERC-7540/7575, AMM (Automated Market Makers), or Order Book contracts.

• Security Mindset: Familiarity with smart contract security audits and common vulnerabilities (Reentrancy, Arithmetic Overflows, Access Control).

• Advanced Methodology: Experience with Fuzzing (e.g., Echidna, Foundry invariant testing) or Formal Verification.